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李晓琳, 吴海峰, 徐荣吉, 等. 菲涅尔聚光的太阳能脉动热管集热器性能实验研究[J]. 太阳能学报, 2025,(11):405-411.
李晓琳, 吴海峰, 徐荣吉, et al. 菲涅尔聚光的太阳能脉动热管集热器性能实验研究[J]. 2025, (11): 405-411.
李晓琳, 吴海峰, 徐荣吉, 等. 菲涅尔聚光的太阳能脉动热管集热器性能实验研究[J]. 太阳能学报, 2025,(11):405-411. DOI: doi:10.19912/j.0254-0096.tynxb.2024-1200.
李晓琳, 吴海峰, 徐荣吉, et al. 菲涅尔聚光的太阳能脉动热管集热器性能实验研究[J]. 2025, (11): 405-411. DOI: doi:10.19912/j.0254-0096.tynxb.2024-1200.
为提高建筑太阳能利用效率
提出一种基于菲涅尔聚光的太阳能脉动热管集热器
并以碳纳米管掺杂的金属纳米流体为传热介质
实验测试了该装置的运行性能。对比研究发现
掺杂后的金属纳米流体表现出较好的吸光特性
且浓度越大吸光性能越好;在测试时段
集热器蒸发段流体的最高集热温度为119.5 ℃
当浓度0.015‰时装置的平均光热转换率最高(69.4%)
比氢氟醚提高了48.5%;适当降低脉动热管的充液率有利于太阳能转化效率的提升。
In order to improve the efficiency of solar energy utilization in buildings
a solar pulsating heat pipe collector based on Fresnel concentrator is proposed
and the operation performance of the device is experimentally tested by using carbon nanotube-doped metal nanofluid as the heat transfer medium. Comparative studies show that the doped metal nanofluids exhibit better light-absorbing properties
and the higher the concentration
the better the light-absorbing properties. During the test period
the maximum temperature in the evaporation section of the collector was 119.5 ℃
and the average photothermal conversion rate of the device was the highest (69.4%) when the concentration was 0.015‰
which was 48.5% higher than that of hydrofluoroether. Appropriately reducing the liquid filling ratio of pulsating heat pipes is conducive to the improvement of solar energy conversion efficiency.
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